Trump picked his transition chairman and other leaders on Friday. It’s his biggest staffing announcement since he won the election this week.

Christie will now serve as vice chairman. He’s joined on the executive committee by former House Speaker Newt Gingrich, retired neurosurgeon Ben Carson, Lt. Gen. Michael Flynn, former New York Mayor Rudolph Giuliani and Alabama Sen. Jeff Sessions.

A statement says more than a dozen other people will also advise Trump on transition matters. They include some of Trump’s children, Republican Party Chairman Reince Priebus and former Breitbart news executive Steve Bannon.